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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 399 · 40 questions
TalentJR

How to do it in your head (Count up): Start at the smaller number. Jump to the next ten, then the next hundred, then to the bigger number. Add up all the jumps.

NameDateTime takenScore ___ / 40
  1. 1.85 − 69 =
  2. 2.527 − 494 =
  3. 3.516 − 488 =
  4. 4.503 − 495 =
  5. 5.102 − 98 =
  6. 6.321 − 289 =
  7. 7.509 − 494 =
  8. 8.127 − 95 =
  9. 9.126 − 94 =
  10. 10.310 − 295 =
  11. 11.105 − 80 =
  12. 12.80 − 39 =
  13. 13.205 − 185 =
  14. 14.1010 − 988 =
  15. 15.522 − 488 =
  16. 16.210 − 181 =
  17. 17.505 − 485 =
  18. 18.75 − 27 =
  19. 19.101 − 76 =
  20. 20.226 − 179 =
  21. 21.98 − 63 =
  22. 22.220 − 188 =
  23. 23.53 − 36 =
  24. 24.503 − 478 =
  25. 25.304 − 287 =
  26. 26.126 − 91 =
  27. 27.1004 − 979 =
  28. 28.53 − 46 =
  29. 29.82 − 62 =
  30. 30.82 − 73 =
  31. 31.108 − 61 =
  32. 32.323 − 281 =
  33. 33.1027 − 997 =
  34. 34.128 − 84 =
  35. 35.511 − 480 =
  36. 36.504 − 488 =
  37. 37.1005 − 991 =
  38. 38.316 − 287 =
  39. 39.1009 − 990 =
  40. 40.205 − 183 =

Answer key

  1. 16
  2. 33
  3. 28
  4. 8
  5. 4
  6. 32
  7. 15
  8. 32
  9. 32
  10. 15
  11. 25
  12. 41
  13. 20
  14. 22
  15. 34
  16. 29
  17. 20
  18. 48
  19. 25
  20. 47
  21. 35
  22. 32
  23. 17
  24. 25
  25. 17
  26. 35
  27. 25
  28. 7
  29. 20
  30. 9
  31. 47
  32. 42
  33. 30
  34. 44
  35. 31
  36. 16
  37. 14
  38. 29
  39. 19
  40. 22

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